Best Dual Flush Toilet Reviews & Guide 2017 (Top 5 Listed)

Best Dual Flush ToiletsIn this guide, we’ve built up a list with the most comprehensive reviews of best dual flush toilets among the market. This type of toilets are becoming increasingly popular for their ability to save water on most flush. This not only reduces the amount of water used, saving resources, it also lowers water bills. The EPA has a certification scheme for toilets that use less than 80% of the federally regulated 1.6 gallons per flush but, at the same time have the capacity to clear a specified volume of solid waste on every flush. This test is carried out using miso paste to have a constant test load. All the toilets below, with the exception of the Saniflo, are EPA Water Sense certified. The Saniflo Sanicompact is a different type of toilet that uses a macerating and pump to remove waste. It still has a dual flush and a very low water consumption.

 

TOP 5 Dual Flush Toilet Reviews

 

  • 4.6 Customer Rating
  • American Standard H2Option Toilet
  • PRICE $
  • Water Consumption : 1.6 GPF
  • Certification : WaterSense
  • Product Dimensions : 27.8 x 15 x 29.5 inches
  • 4.4 Customer Rating
  • Toto Washlet with Integrated Toilet Model
  • PRICE $$$
  • Water Consumption : 1.28 GPF
  • Certification : WaterSense
  • Product Dimensions : 28.5 x 11.8 x 25.2 inches
  • 4.7 Customer Rating
  • KOHLER Wellworth Dual Flush Toilet
  • PRICE $
  • Water Consumption : 1.6 GPF
  • Certification : Yes
  • Product Dimensions : 28.5 x 18 x 29.2 inches
  • 4.2 Customer Rating
  • TOTO Aquia Dual Flush Toilet
  • PRICE $
  • Water Consumption : 0.9 GPF
  • Certification : WaterSense
  • Product Dimensions : 27.5 x 14.2 x 31.2 inches
  • 4.4 Customer Rating
  • Saniflo Sanicompact Toilet
  • PRICE $$
  • Water Consumption : 1.6 GPF
  • Certification : Not Applicable
  • Product Dimensions : 18.2 x 14.5 x 15.8 inches

 

American Standard H2Option Toilet

American Standard 2889.216.020 H2Option Siphonic Dual Flush Round Front Toilet, White, 2-PieceThe H2Option has a dual flush system using 1.6 GPF for the full flush and 1.0 GPF for the partial flush. The flush is operated by two chrome plated push buttons on the top of the tank. The flushing action is enhanced by American Standard’s H2Option Siphonic flushing system which is a high efficiency pressurized flushing action. Even though the full flush uses more than the general Water Sense specification of 1.28 GPF, as this is a dual flush toilet the testing is different. The test is based on the average of two partial flushes and one full flush. The H2Optmeets this specification and therefore Water Sense certified. This toilet is not ADA compliant. The toilet, which is 100% flush tested before leaving the factory, carries a 5-year limited warranty. Our full review on the H2Option toilet can be seen here.

 

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Toto Washlet with Integrated Toilet Model

Toto MS970CEMFG#01 1.28-GPF/0.9-GPF Washlet with Integrated Toilet G500, CottonThis model is a compact, one-piece, skirted toilet and bidet combined. It is one of the very few dual flush toilets that meets all the requirements of ADA compliance. Although other dual flush toilets meet the height and bowl specifications for ADA compliance, they do not meet the levered flush requirement. It overcomes this by having an automated flushing mechanism. It is a technology packed toilet in both the construction and electronically controlled features. The Washlet is Water Sense certified.

The toilet has Toto’s 3D Tornado flush system that uses a series of nozzles to increase the flushing capability of the toilet using minimal water. In combination with the ultra-smooth ceramic glaze, this helps keep the toilet cleaner for longer and minimizes the need for manual cleaning.

There is an automatic opening and closing of the lid, which then triggers the automatic flush. The seat is heated and the washing feature of the bidet can be adjusted for both direction and temperature. These functions along with the variable warm air drying can be adjusted via the wireless remote control pad. Read the full review on the Toto Washlet with Integrated Toilet!

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KOHLER Wellworth Dual Flush Toilet

KOHLER K-3987-47 Wellworth Two-Piece Round-Front Dual-Flush Toilet with Class Five Flush System and Left-Hand Trip Lever, AlmondThis dual flush toilet has a rounded front that requires less floor space than the elongated toilets, therefore suitable for smaller bathrooms and powder rooms.

The fact that the toilet is a little smaller does not reduce the efficiency of the toilet. WellWorth has a Class 5 flush system that can remove a large quantity of waste in just one flush and still meet the EPA Water Sense specifications for low water consumption.

Kohler’s class 5 toilets are renown for the amount of waste that they can flush away in a single flush, even with only 1.28 gallons of water. The dual flush system delivers a full flush of 1.28 gallons or a partial flush of 1.1 gallons. This video, from Kohler, explains the way that the flushing system works.See full page Wellworth Toilet Review!

 

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TOTO Aquia Dual Flush Toilet 

TOTO CST412MF.01 Aquia Dual Flush Elongated Two-Piece Toilet, 1.6GPF & 0.9GPF, Cotton WhiteThe TOTO Aquia is a close coupled two piece design. On the top of the tank are two chrome buttons that are used to trigger either of the two flushes. The toilet with a seat (which must be purchased separately) is what Toto refer to as ‘universal height’. This means that the shape and height of the seat meet the requirements of the ADA specifications, but due to having a flush triggered by buttons rather than a lever, the toilet is not fully compliant.

With a choice of either a full flush of 1.6 gallons or a partial flush of 0.9 gallons, the Toto Aquia meets the stringent requirements for the EPA Water Sense certification for dual flush toilet. This means that over a series of tests the water consumption must be no more than 80% of the federally mandated 1.6 GPF, i.e. no more than 1.28 GPF. This toilet is well within that requirement with an average of 1.1 GPF. Read full  TOTO Aquia Toilet review.

 

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Saniflo Sanicompact Toilet

Saniflo 023 SANICOMPACT 48 One piece Toilet with Macerator Built Into the Base, WhiteThe Saniflo 023 SANICOMPACT is quite different to most standard toilets in that it uses macerating and a pump to remove waste, rather than flushing directly into the drainage system. This makes the Sanicompact 48 an ideal solution to fitting a toilet in areas where a standard flush toilet is impractical. A waste pipe from a sink can also be hooked up to the toilet making it an ideal solution to building a half bath in places where a standard toilet would be impractical. The pump on the toilet can pump up to 9 feet in height and 100 feet horizontally, all through a 1” pipe.

As mentioned above, the Sanicompact 48 does not use a conventional flushing system. Instead, once the flush button is pressed, the toilet fills itself with a set volume of water, then this, together with the waste, is drawn through macerating blades and pumped out through the 1” waste pipe. The flushing system is explained in this video from Saniflo. Here is the full review on the Saniflo Sanicompact.

 

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Glossary

Throughout the reviews, there are a number of terms that may be unfamiliar to many people. Here we explain some of them in a little greater detail;

 

EPA Water Sense

Best Dual Flush ToiletsThis is an initiative to reduce water consumption, while at the same time not losing any efficiency with the flushing of the toilet. To achieve this certification, a Water Sense toilet must use no more than the federally regulated 1.6 gallons per flush. This reduction means that the toilet must use no more than 1.28 gall
ons per flush. On dual flush toilets, this is calculated as the average consumption of 2 partial flushes and 1 standard flush.

In some areas where water is at risk of being in short supply, such as Los Angeles, it is mandated that only Water Sense certified toilets are fitted.

Although the Water Sense certification is a federal initiative, the incentives offered on such toilets are not universal across the whole of the US. In many municipalities buying a Water Sense certified toilet will entitle you to a rebate. The areas that do offer rebates are available on the EPA Water Sense website.

We also recommend considering to have a proper water filter or a reverse osmosis system for clean and safe water usage.

 

ADA Certification

ADA certification is designed to make sure that toilets are able to be used by most adults of varying abilities. One of the requirements is that the toilet seat should be of a specified height – a height this is the equivalent of the standard height of a chair. The bowl also has to be of an elongated shape for added comfort. The specification then specifies that to be fully compliant the flush should be lever (or automatically) operated and that the lever should be on the same side as the approach to the toilet.

Many dual flush toilets meet the dimensional requirements of ADA compliance, but because they have a press button flush they do not meet the full specification. Not meeting ADA requirements mean that these toilets cannot be fitted into new or refurbished restrooms that are used by employees or the public.

 

Special Finishes to Toilets

On many toilets, you will see that there are mentions of special finishes such as SanaGloss (this name is being renamed CeFiONtec) or EverClean. In simple terms, these are high gloss finishes that are cleaned easier than a standard finish with a flush. The finishes also have a higher resistance to the buildup of water stains and inhibit the growth of bacteria and mold. Not only does this resistance reduce the need for manual cleaning and smells. To preserve these special finishes, milder cleaning agents must be used when cleaning the toilet manually.

Best Dual Flush Toilet Comparison Chart

PRODUCTPRICEWater ConsumptionProduct Dimensions
American Standard H2Option Toilet
$1.6 GPF27.8 x 15 x 29.5 inches
Toto Washlet with Integrated Toilet Model
$$$1.28 GPF28.5 x 11.8 x 25.2 inches
KOHLER Wellworth Dual Flush Toilet
$1.6 GPF28.5 x 18 x 29.2 inches
TOTO Aquia Dual Flush Toilet
$0.9 GPF27.5 x 14.2 x 31.2 inches
Saniflo Sanicompact Toilet
$$1.6 GPF18.2 x 14.5 x 15.8 inches

 

Flushing Mechanisms

Flushing-Mechanisms2To achieve the highly effective flushes that are achieved with smaller volumes of water, all the lower water use toilets have an enhanced flushing system. Although the newer system varies from manufacturer to manufacturer, rather than the flap valve that was used on older toilets, the water conserving toilets use a siphon system that boosts the power of the flush.

Years ago, a toilet was a toilet, the visual features and colors were different, but internally they were all very similar. The choice of toilets available today is extensive and, due to manufacturers preference for using a myriad of names to describe similar features, can be confusing as well. In our review of the best Dual Flush toilets, we have selected the best flushing toilet from the 100s available and endeavored to explain what all the features mean to you as the consumer of the product. Whichever toilet you end up selecting, you can be assured that the water consumption (and your water bills) will be lower that the very old toilets and that the flushing efficiency will be greater.

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